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EP1084949B1 - Mehrscheibenbremse für Flugzeuge - Google Patents

Mehrscheibenbremse für Flugzeuge Download PDF

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Publication number
EP1084949B1
EP1084949B1 EP00307900A EP00307900A EP1084949B1 EP 1084949 B1 EP1084949 B1 EP 1084949B1 EP 00307900 A EP00307900 A EP 00307900A EP 00307900 A EP00307900 A EP 00307900A EP 1084949 B1 EP1084949 B1 EP 1084949B1
Authority
EP
European Patent Office
Prior art keywords
wheel
brake
support
actuator
set forth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00307900A
Other languages
English (en)
French (fr)
Other versions
EP1084949A2 (de
EP1084949A3 (de
Inventor
Thomas H. Haydon
Derolle E. Haugen
Franklin C. Christ
Mihai Ralea
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goodrich Corp
Original Assignee
Goodrich Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Goodrich Corp filed Critical Goodrich Corp
Priority to EP05077561A priority Critical patent/EP1626001B1/de
Publication of EP1084949A2 publication Critical patent/EP1084949A2/de
Publication of EP1084949A3 publication Critical patent/EP1084949A3/de
Application granted granted Critical
Publication of EP1084949B1 publication Critical patent/EP1084949B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
    • B60T1/065—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing disc
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C25/00—Alighting gear
    • B64C25/32—Alighting gear characterised by elements which contact the ground or similar surface 
    • B64C25/42—Arrangement or adaptation of brakes
    • B64C25/44—Actuating mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
    • B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
    • B64F5/10—Manufacturing or assembling aircraft, e.g. jigs therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/24—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
    • F16D55/26—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member without self-tightening action
    • F16D55/36—Brakes with a plurality of rotating discs all lying side by side
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • F16D65/186—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes with full-face force-applying member, e.g. annular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D2055/0004—Parts or details of disc brakes
    • F16D2055/0008—Brake supports
    • F16D2055/0012—Brake supports integral with vehicle suspension
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D2055/0004—Parts or details of disc brakes
    • F16D2055/0058—Fully lined, i.e. braking surface extending over the entire disc circumference
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D2055/0075—Constructional features of axially engaged brakes
    • F16D2055/0091—Plural actuators arranged side by side on the same side of the rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
    • F16D2066/005—Force, torque, stress or strain
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/18—Electric or magnetic
    • F16D2121/24—Electric or magnetic using motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2123/00—Multiple operation forces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/34—Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
    • F16D2125/40—Screw-and-nut
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/44—Mechanical mechanisms transmitting rotation
    • F16D2125/46—Rotating members in mutual engagement
    • F16D2125/48—Rotating members in mutual engagement with parallel stationary axes, e.g. spur gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/44—Mechanical mechanisms transmitting rotation
    • F16D2125/46—Rotating members in mutual engagement
    • F16D2125/52—Rotating members in mutual engagement with non-parallel stationary axes, e.g. worm or bevel gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2250/00—Manufacturing; Assembly
    • F16D2250/0084—Assembly or disassembly

Definitions

  • the invention herein described relates generally to brake assemblies and more particularly to aircraft landing gear and aircraft landing gear with an integrated brake actuation system.
  • One embodiment of the invention relates to aircraft brake assemblies.
  • Aircraft brake assemblies have traditionally been comprised of three major functional components, a torque tube, an actuator assembly and a heat sink (brake disk stack). These components are assembled into a brake assembly, which is known as a Line Replaceable Unit (LRU).
  • LRU Line Replaceable Unit
  • An LRU is removed and replaced on a flight line as a single component. Accordingly, if one of the major functional components requires repair or replacement, removal of the entire LRU is effected for transfer of the LRU to a speciality shop for disassembly, repair and acceptance testing. This is an inefficient use of resources when one of the components requires more frequent servicing than the other components. Also, stocking of the present day LRUs comprising the three above-mentioned functional components.
  • EP 0936373 discloses the features of the preamble of claim 1.
  • the present invention provides a different such assembly, wherein the actuator portion of the brake assembly is no longer provided as part of the brake assembly but instead as part of the aircraft landing gear.
  • the actuator portion or individual actuators assemblies are designated as LRUs, which are replaceable independently of other brake components, e.g., the torque tube and heat sink, which then comprise the brake assembly designated as a separate LRU.
  • This new arrangement is particularly suited to electro-mechanically actuated brakes, where actuator maintenance intervals will typically be more closely related to landing gear maintenance intervals than to brake maintenance (i.e., hydraulic actuator and/or heat sink maintenance).
  • the brake disk stack is carried on the torque transfer member and removable therewith as a unit from the wheel support.
  • the actuator includes a plurality of actuator modules individually removably mounted to the wheel support.
  • the wheel support has at least one flange thereon to which the actuator modules are mounted, and the actuator modules have at least one mounting flange secured to an outboard side of the at least one flange. More generally, the actuator modules have one or more mounting flanges abutting axially outwardly facing mounting surfaces on the wheel support.
  • the torque transfer member may be a torque tube having a mounting ring, and the mounting ring may be retained on the wheel support by a retainer and a thrust bearing interposed between the retainer and the mounting ring.
  • the torque transfer member may be relatively rotatable on the wheel support, and the torque transfer member and wheel support may include a cooperating lug and recess interengaged to transfer torque for the torque transfer member to the wheel support.
  • a load transducer may be interposed between the lug and recess for sensing the transferred braking load.
  • each actuator module includes a housing, a reciprocating ram mounted in the housing, an electric motor, and rotary-to-linear motion transfer device connecting the motor to the ram, and wherein the reactionary axial loads caused by the motion transfer device are passed as compression loads from the motion transfer device to the mounting flange.
  • the assembly 10 generally comprises a torque tube 12, an actuator assembly 14, a brake disk stack (heat sink) 16, a wheel 18 and a wheel support 20.
  • the wheel support 20 is a landing gear strut 22 provided with an axle 24.
  • the wheel 18 is supported for rotation by inboard and outboard bearings 26 and 28 on the axle 24.
  • the actuator assembly 14 comprises one or more actuator modules 30 which include respective actuator rams 32.
  • the actuator modules 30 are individually mounted to one or more support flanges 34 by removable bolt fasteners 36 or other suitable means enabling quick and easy attachment and detachment of the actuator modules to and from the flanges 34.
  • a plurality of the actuator modules 30 are mounted in a circular arrangement around the rotational axis 38 of the wheel, preferably with the actuator rams 32 circumferentially equally spaced apart.
  • Electrical connectors may be provided to effect quick and easy electrical connection of the actuators to a brake controller (not shown).
  • the controller may include a corresponding number of independent servo amplifiers, a microprocessor with associated peripherals, and data input/output (I/O) circuitry. Details of the controller are not being described herein as the invention does not reside in the type of controller or other circuitry used to control operation of the actuator modules.
  • the support flanges 34 are integrally joined to the axle 24 and radiate from the axle in a generally symmetric pattern.
  • the flanges may be integrated in the axle or strut, or the wheel support in general.
  • the flanges may by removably attached to the axle by suitable means, such as by fasteners to a mounting flange or other mounting structure on the axle, strut or wheel support in general.
  • the flanges may also be formed by respective portions of a continuous flange, such as an annular flange surrounding the axle. This annular flange may be removably mounted to the axle, strut or wheel support in general, for removal of the actuator assembly 14 as a unit.
  • each actuator module 30 includes an electric motor 50, a gear train 51, and a ball screw assembly 52.
  • the gearing 51 includes a pinion 59 on the drive shaft of the electric motor 50, a first-stage transfer gear member 60 in mesh at it input end with the pinion, a second stage transfer gear member 62 in mesh at its input end with the output end of the first stage gear member, and a ball nut gear 64 in mesh with the output end of the second stage gear.
  • the ball nut gear may be formed integrally with the ball nut 65 of the ball screw assembly 52 (although reference herein is made to certain structures as being integral as is preferred, it should be understood such structures alternatively may be composed of discrete components joined together to form a functionally equivalent structure).
  • the ball screw assembly 52 is comprised of the ball nut 65 with the integral gear 64, a ball screw 68 that moves linearly upon rotation of the ball nut, an anti-rotation guide 70 extending into the hollow interior of the ball screw, and a ram pad 72 (Fig. 2) that attaches to the end of the ball screw and provides an insulating interface with the brake disk stack (Fig. 2).
  • the ball screw and ball nut generally may be of a known configuration and thus the respective spiral grooves thereof and associated balls have not been illustrated as the same would be immediately evident to one skilled in the art. Also, other rotary to linear motion conversion devices may by employed, if desired, with the linear moving member coinciding with the ball screw and functioning as the actuator ram.
  • the interior bore of the screw and the anti-rotation guide have corresponding polygonal cross-sections defined by plural inner/outer side surfaces which rotationally interfere with one another to restrain rotation of the screw relative to the housing.
  • one or more of the side surfaces are planar and form regular polyhedrons providing a close sliding fit between the ball screw and the guide rod. It will be appreciated, however, that other configurations may be used although less preferred.
  • the motor 50, gearing 51 and ball screw assembly 52 are all carried in a module housing 72.
  • the housing 72 includes a mounting flange 74 which may be a continuos flange extending completely or, as illustrated, partway around the casing.
  • the mounting flange alternatively may be composed of discrete elements such as lugs.
  • the depicted mounting flange can be seen to be composed of lugs 76 protruding at strategic locations from the sides of the housing.
  • the mounting flanges 74 of the actuator modules 30 are preferably abuttedly engaged with the outboard sides of the respective support flanges 34, i.e., the side thereof nearest the brake disk stack 16. This is advantageous because the axial braking loads will then be passed from the actuator to the flange without passing through removable fasteners or other devices used to attach the actuator modules to the flanges and which would be subjected to tensile loads. Accordingly, one or more smaller and lighter fasteners can be used to effect such attachment, as they need not be design rated to carry the large axial tension loads encountered during braking.
  • the actuators and flanges are configured to enable removal of the actuators from the flanges without disturbing the brake assembly consisting of the brake disks and torque tube. If needed, the ram pad may be removed to facilitate removal of the actuator.
  • the actuator housing may also be provided with a spiral flange for bayonet-like assembly to the flange, which is provided with a mating spiral surface.
  • the housing 72 may be primarily composed of an outer housing member or casing 80 that includes the mounting flange 74 integrally therewith.
  • the casing 80 has an axially facing shoulder surface 82 with bears the axial reactionary loads generated by the ball screw assembly 52 during braking. As shown, the ball nut 65 bears against such shoulder surface via an axial thrust bearing 84.
  • the brake disk stack 16 is composed of stationary brake elements and rotary brake elements that are interleaved and surround the torque tube 12.
  • the stationary and rotary brake elements are in the form of stator disks 86 and rotor disks 87.
  • the stator disks 86 are splined to the torque tube 12 and the rotor disks 87 are splined to the wheel 18 interiorly of the wheel's rim.
  • the splined connection may be effected by a plurality of spline or drive keys that are spaced around the circumference of the rim/torque tube to permit axial movement of the rotor/stator disks while being held to the wheel/torque tube against relative rotation.
  • the disk stack 16 is located between a back pressure member 90 and the actuator rams of the actuator assembly.
  • the back pressure member 90 is formed by a radial flange at the outer end of the torque tube 12.
  • the radial flange carries thereon a plurality of circumferentially spaced torque pucks 91 engaged with the last brake disk at the rear end of the disk stack 16.
  • the torque tube 12 has at its inboard end a mounting ring or flange 100 which has a contoured counterbore that fits over a correspondingly contoured locating collar 102 on the axle 24.
  • the torque tube can be axially retained by a thrust bearing 103 and a retainer nut 104 threaded onto a threaded portion 105 of the axle 24.
  • the thrust bearing is interposed between the retainer nut and an axially outwardly facing shoulder surface on the interior wall of the torque tube at it inboard end.
  • the thrust bearing is lightly pre-loaded by the retainer nut to minimize the amount of braking torque reacted through the axle. This allows essentially all of the braking torque to be reacted through a load transducer 110 incorporated as part of the landing gear.
  • the mounting ring 100 includes a recess (socket) 112 for receiving the load transducer and a torque take-out lug 113 provided on the axle 24 or elsewhere on the wheel support 20.
  • the torque take-out lug and recess are rotationally interlocked and function as an interface between the torque tube and the landing gear axle structure.
  • the output of the load cell 110 will be indicative of brake torque, and the load cell output may be supplied to a brake controller for use in controlling the braking operation.
  • the purpose of the brake actuator(s) is to impress a clamping force on a stack of brake disk elements.
  • the electro-mechanical (EM) actuators operate simultaneously to produce a clamping force between a brake reaction or back pressure member 90 and the actuator output rams 32.
  • the size and number of actuators may be varied to provide the total brake clamping force required.
  • the thrust bearing 103 can be eliminated if the brake torque transducer 110 is integrated into the axle or landing gear.
  • the brake structure can be rigidly connected to the axle such as by using a bolted flange joint, a combination of bolts and studs, etc.
  • a wheel and brake assembly that enables the brake assembly (brake disk stack and torque tube), indicated at 120, to be replaced without disturbing the actuators 30. More particularly, the torque tube 12 can be removed without removal of and/or disturbing the actuators 30. This eliminate possible handling damage of the actuators during brake removal.
  • a snap ring may be provided to retain the brake disks on the torque tube when the brake assembly is removed.
  • individual actuators 30 can be replaced as an LRU without disturbing the remaining actuators or the brake assembly 120.
  • the brake assembly, sans actuators, is lighter in weight and easier to handle.
  • FIGs. 5 and 6 another embodiment of brake and wheel assembly is illustrated.
  • the assembly 140 is the same as the above-described assembly, except for the actuator assembly 142.
  • the motor 144 is oriented with its axis perpendicular to the axis of the ram 146.
  • the motor is oriented with its axis parallel with the ram axis. This arrangement is more conducive to locating the motor more remote from the brake assembly including the torque tube and brake disks.
  • the flanges 150 to which the actuators are mounted will include an aperture for passage of the motor and/or gear train connecting the motor to the ram.
  • the flanges each may include a pair of generally radially outwardly extending arms 152 that are parallel and spaced apart to receive therebetween the actuator assembly.
  • the actuator assembly includes a mounting flange in the form of opposed lugs through which fasteners extend to secure the actuator assembly to the mounting flanges.
  • the lugs 156 are disposed on the outboard side of the mounting arms.
  • the arms of each flange may be interconnected by a web extending therebetween, if desired, or the arms may be formed by respective portions of a continuous flange.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Braking Arrangements (AREA)

Claims (10)

  1. Rad-/Bremsenanordnung mit einem Radhalter (20), einem drehbar an dem Radhalter (20) angebrachten Rad (18), einem mit dem Radhalter (20) verbundenen Drehmomentübertragungselement (12) zum Übertragen von Drehmoment von einem Bremsscheibenstapel (16) auf den Radhalter (20) während des Bremsens, wobei der Bremsscheibenstapel (16) an dem Übertragungselement (12) abgestützt ist, und einer an dem Radhalter (20) angebrachten Betätigungsvorrichtung (14/142) zum Aufbringen von Bremskraft auf den Bremsscheibenstapel (16), wobei die Betätigungsvorrichtung (14/142) mehrere Betätigungsmodule (30) aufweist, die einzeln lösbar an dem Radhalter (20) angebracht sind, wobei jedes Betätigungsmodul (30) ein Gehäuse (72), einen in dem Gehäuse angebrachten hin und her gehenden Stößel (32/146), einen Elektromotor (50/144) und eine den Motor (50/144) mit dem Stößel (32/146) verbindende Vorrichtung (52) zum Umsetzen von Drehbewegung in lineare Bewegung aufweist, dadurch gekennzeichnet, daß das Gehäuse (72) jedes Betätigungsmoduls (30) mindestens einen Befestigungsflansch (74/156) aufweist, der an einer axial nach außen gerichteten Befestigungsfläche des Radhalters (20) auf der dem Bremsscheibenstapel zugewandten Seite des Radhalters anliegt.
  2. Rad-/Bremsenanordnung nach Anspruch 1, bei welcher der Bremsscheibenstapel (16) auf dem Drehmomentübertragungselement (12) getragen ist.
  3. Rad-/Bremsanordnung nach Anspruch 1 oder Anspruch 2, bei der jedes Betätigungsmodul (30) an einem sich radial erstreckenden Stützflansch (34/150) angebracht ist.
  4. Rad-/Bremsenanordnung nach Anspruch 3, bei der der Stützflansch (34/150) mehrere umfangsmäßig beabstandete Stützflansche (34/150) umfaßt, an denen die Betätigungsmodule (30) jeweils angebracht sind.
  5. Rad-/Bremsanordnung nach Anspruch 3 oder Anspruch 4, bei der die Elektromotoren (50/144) der Betätigungsmodule (30) auf der dem Bremsscheibenstapel abgewandten Seite angeordnet sind.
  6. Rad-/Bremsenanordnung nach einem der vorhergehenden Ansprüche, bei der der Motor (50/144) eine Drehachse hat und der Stößel (32/146) sich entlang einer Achse bewegt, die zu der Drehachse des Motors parallel oder senkrecht verläuft.
  7. Rad-/Bremsenanordnung nach einem der vorhergehenden Ansprüche, bei der das Drehmomentübertragungselement (12) ein teleskopartig über dem Radhalter (20) angeordnetes Torsionsrohr aufweist, wobei das Torsionsrohr einen sich radial nach innen erstreckenden Befestigungsflansch (100) aufweist und der Flansch (100) durch eine auf den Radhalter (20) geschraubte Haltemutter (104) an dem Radhalter gehalten ist.
  8. Rad-/Bremsenanordnung nach einem der vorhergehenden Ansprüche, bei der das Drehmomentübertragungselement (12) und der Radhalter (20) einen Ansatz und eine Ausnehmung (112, 113) aufweisen, die zusammenwirken und welche zusammengreifen, um Drehmoment von dem Drehmomentübertragungselement an den Radhalter zu übertragen, wobei vorzugsweise ein Lastsensor (110) zwischen dem Ansatz (113) und der Ausnehmung (112) zum Erfassen der übertragenen Bremslast zwischengefügt ist.
  9. Rad-/Bremsenanordnung nach einem der vorhergehenden Ansprüche, bei der die Betätigungsmodule (30) an der Stütze (20) mittels lösbarer Befestigungseinrichtungen angebracht sind und axiale Bremslasten von den Betätigungsmodulen (30) an die Stütze (20) übertragen werden, ohne die lösbaren Befestigungseinrichtungen (36) zu passieren.
  10. Rad-/Bremsenanordnung nach einem der vorhergehenden Ansprüche, bei der das Gehäuse (72) jedes Betätigungsmoduls (30) einen Mantel (80) aufweist, an dem der Befestigungsflansch (74/156) einstückig angeformt ist, und wobei von der Vorrichtung (52) zum Umsetzen von Drehbewegung in lineare Bewegung erzeugte Reaktionslasten von dem Mantel zum Befestigungsflansch (74/156) unabhängig von jeglichen Befestigungseinrichtungen geleitet werden.
EP00307900A 1999-09-13 2000-09-13 Mehrscheibenbremse für Flugzeuge Expired - Lifetime EP1084949B1 (de)

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Also Published As

Publication number Publication date
US20030213657A1 (en) 2003-11-20
US6581730B1 (en) 2003-06-24
EP1084949A2 (de) 2001-03-21
EP1084949A3 (de) 2003-09-17
CA2318688C (en) 2008-11-18
DE60038197D1 (de) 2008-04-10
DE60038197T2 (de) 2009-03-12
DE60024018T2 (de) 2006-08-03
CA2318688A1 (en) 2001-03-13
DE60024018D1 (de) 2005-12-22

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